As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCN - C21 CK - C - BS 178 PRESS BULKHEAD CENTER WEB HAS A .5 INCH CRACK, WL 234, LBL 10 AT A FASTENER HOLE AS DETERMINED WITH HFEC. MAINTENANCE CUT OUT DAMAGED AREA AND FABRICATED REPAIR DOUBLER AND FILLER AND INSTALLED REPAIR PARTS IAW AWA ER 15-5312-01249-DL3.